1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2007-2019 Free Software Foundation, Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 # watch-thread_num.exp Test thread <thread_num> parameter for
22 # This test verifies that a watchpoint is detected in the proper thread
23 # so the test is only meaningful on a system with hardware watchpoints.
24 # More specifically, the implementation of this test uses access
25 # watchpoints, so skip it when those are not available.
26 if {[skip_hw_watchpoint_access_tests]} {
32 # What compiler are we using?
34 if [get_compiler_info] {
38 if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
42 clean_restart ${binfile}
44 if { ![runto main] } then {
49 gdb_test "watch shared_var thread 0" "Invalid thread ID: 0" "watchpoint on invalid thread"
50 gdb_test "watch shared_var thread" "A syntax error in expression, near `thread'\." "invalid watch syntax"
52 set bpexitline [gdb_get_line_number "all threads started"]
53 gdb_breakpoint "$bpexitline"
54 gdb_continue_to_breakpoint "all threads started"
56 gdb_test "break loop" "Breakpoint \[0-9\].*" \
57 "Set breakpoint at loop"
59 gdb_test "continue" ".*Breakpoint .*loop.*" "stopped in loop"
61 gdb_test_multiple "thread" "thread command" {
62 -re ".*Current thread is (\[0-9\]*).*$gdb_prompt $" {
67 set thread_num "$expect_out(1,string)"
71 # We use an access watchpoint rather than a write watchpoint, because
72 # GDB can drop the latter when multiple threads trigger events
73 # simultaneously, on targets with continuable watchpoints, such as
74 # x86. See PR breakpoints/10116.
76 gdb_test "awatch shared_var thread $thread_num" \
77 "Hardware access \\(read/write\\) watchpoint .*: shared_var.*" \
78 "watchpoint on shared variable"
80 gdb_test "info breakpoint \$bpnum" \
81 "stop only in thread $thread_num" \
82 "info breakpoint shows watchpoint is thread-specific"
84 for {set i 1} {$i <= 5} {incr i} {
85 set watchpoint "Watchpoint triggered iteration $i"
86 set check "Check thread that triggered iteration $i"
89 gdb_test_multiple "continue" $test {
91 # Avoid timeouts when debugging GDB.
94 -re "Hardware access \\(read/write\\) watchpoint .*: shared_var.*$gdb_prompt $" {
98 gdb_test "thread" ".*Current thread is $thread_num .*" $check